AFNI program: 3dAFNItoRaw

Output of -help

[7m*+ WARNING:[0m This program (3dAFNItoRaw) is old, not maintained, and probably useless!
Usage: 3dAFNItoRaw [options] dataset
Convert an AFNI brik file with multiple sub-briks to a raw file with
each sub-brik voxel concatenated voxel-wise.
For example, a dataset with 3 sub-briks X,Y,Z with elements x1,x2,x3,...,xn,
y1,y2,y3,...,yn and z1,z2,z3,...,zn will be converted to a raw dataset with
elements x1,y1,z1, x2,y2,z2, x3,y3,z3, ..., xn,yn,zn
The dataset is kept in the original data format (float/short/int)
Options:
-output / -prefix = name of the output file (not an AFNI dataset prefix)
the default output name will be rawxyz.dat

-datum float = force floating point output. Floating point forced if any
sub-brik scale factors not equal to 1.

INPUT DATASET NAMES
-------------------
This program accepts datasets that are modified on input according to the
following schemes:
'r1+orig[3..5]' {sub-brick selector}
'r1+orig<100..200>' {sub-range selector}
'r1+orig[3..5]<100..200>' {both selectors}
'3dcalc( -a r1+orig -b r2+orig -expr 0.5*(a+b) )' {calculation}
For the gruesome details, see the output of 'afni -help'.